High flow cats

[Hzaza]

Looking to buy some high flow cats, currently running jun bl secondary and borla catback, any suggestions on which one to get? I see the NGS one often. Any suggestions are appreciated!

 

[Rodtheviking]

IMR G70 and Stinger HFC Primary Downpipes

IMR has developed a set of HFC downpipes to enhance the power and let the turbos breath on your 3.3TT Stinger or G70. Our primary downpipes feature a ported mouth, allowing proper flow from the turbo through the downpipe. We've also increased the inner diameter of the exhaust pipe from the...

www.imramerica.com

 

[Michael Hespe]

Ultimate Performance. They come with the midpipe catless and have a 400 cell cat vs the IMR 200 cell cat. Not sure what that means but its a bigger number so it must mean very high flow cat!?

 

[GennyGuy]

Ultimate Performance. They come with the midpipe catless and have a 400 cell cat vs the IMR 200 cell cat. Not sure what that means but its a bigger number so it must mean very high flow cat!?

Less flow actually. Stock cats are usually 600-800 cell count (There will be exceptions).

 

[Michael Hespe]

@GennyGuy Good to know. Thanks for that info. Makes sense if you think about how many cells are in the cat. if there are 800 of them vs 200 it seems the 800 would be way more restrictive.

 

[Stinger GT SS]

Has anyone changed out the factory cats to high flow cats on the stock exhaust & stock engine. If so did you notice any improvement in performance.

 

[seeyainakia]

Has anyone changed out the factory cats to high flow cats on the stock exhaust & stock engine. If so did you notice any improvement in performance.

If the rest of the exhaust is stock I don't think you'll see a difference just by adding HFC's